MEMs

Line Conditioning Module

The VPTPCM-12 Series pre-conditioning power module from VPT, Blacksburg, VA, works within a DC-DC power system to suppress transient voltages and create a reliable power output of up to 120W. The module offers a high-reliability COTS power solution designed for rugged military and avionics applications. Features of the module include continual operation with input down to 6V per MIL-STD-1275, and a wide input range that provides dual nominal input voltages (12V and 28V) to satisfy both MIL-STD-1275 and MIL-STD-704 requirements.

Posted in: Products
Read More >>

FPGA Modules

Acromag, Wixom, MI, has released the PMC-CX series of user-configurable FPGA (field-programmable gate array) modules, which feature conduction cooling and differential digital I/O. The four new models feature XilinxÆ Virtex-II FPGAs with either 11k or 24k logic cells and a choice of 32 differential RS-422/485 lines or 24 RS-422/485 lines with 16 CMOS I/O channels. These modules allow for configuring custom I/O boards using application-specific instruction sets.

Posted in: Products
Read More >>

Hybrid Vehicle Test Systems

SAKOR Technologies, Okemos, MI, has released the HybriDyne™ Series of hybrid vehicle driveline test systems. The HybriDyne calibrates the performance, efficiency, and durability of hybrid drivetrain systems, including electrical assist, diesel electric, and fully electric vehicle systems. The system integrates components of SAKOR’s DynoLAB™ PT Engine Test Cell Supervisory System with elements of its DynoLAB™ EM Electric Motor Test System. Coupled with one or more AccuDyne™ AC Motoring Dynamometers, the modular HybriDyne is capable of testing individual mechanical and/or electrical components, integrated subassemblies, and complete drivetrains with a single installation.

Posted in: Products
Read More >>

Outdoor Housing for Dome Cameras

Dotworkz, San Diego, CA, has launched the D2™ environmental housing that provides protection to PTZ dome cameras from the rigors of outdoor use and physical damage. The D2 is compatible with 99% of analog and IP PTZ cameras, including models from Axis, Sony, Toshiba, and Canon. It is water-tight and air-tight, assuring that cameras are kept within proper operating temperatures. The housing is equipped with a heater/blower suitable for use in temperatures ranging from 30°F to 95°F. The D2 is also offered with either the Dotworkz Ring of Fire™ cold climate system for areas that reach below -20°F and where ice/snow commonly collects, or with the Dotworkz Cooldome™ thermo-electric cooling system that protects the camera system in temperatures up to 145°F.

Posted in: Products
Read More >>

Digital Switch Matrices

The Electronics Group of Crane Aerospace & Electronics, Redmond, WA, has released its Model 1130 and Model 1120 digital switch matrices that are configured to accommodate up to 144 inputs and 144 outputs that can be distributed among clock and data signals. They provide full fan-out operation, allowing each input to be routed to any or all outputs simultaneously. They are also nonblocking, meaning that any number of input and output combinations can be connected. These devices are suitable for large data routing installations.

Posted in: Products
Read More >>

Taking PC/104 CPU Boards to the Next Performance Level

Since their introduction in 1991, PC/104 standard based systems have been widely adopted in various applications. Unmanned aircraft control, onboard vehicle control and navigation systems, personal communicators, add-on cards for customer specific boards, all utilize PC/104 technology. Many system developers choose this form-factor due to its advantages in terms of low weight, compact size (boards are just 90×96 mm), ease of application development and modification, and mechanical reliability.

Posted in: Articles, Articles, Board-Level Electronics, Electronics & Computers, Design processes, Computer software / hardware, Customization
Read More >>

Data-Centric Distributed Application Architecture for Shipboard Systems

System architects design distributed applications leveraging computer resources connected by a network infrastructure: CPU-intensive tasks may be located on powerful core servers; application-data storage may be managed by specialized database servers; and data-collection, actuation, and user interaction may occur on nodes located at the edge of the network. The architecture must accommodate coordination of the distributed resources as well as ensuring that the necessary data is available to all the computation, decision- making, and visualization nodes.

Posted in: Articles, Aerospace
Read More >>

The Ballistic Missile Defense System: An Integrated Approach to Global Defense

Although the end of the Cold War signaled a reduction in the likelihood of global nuclear conflict, the threat from ballistic missiles has grown steadily as sophisticated missile technology becomes available on a wider scale to countries hostile to the U.S. and its allies.

Posted in: Articles, Aerospace
Read More >>

Measuring Skin Friction in Complex Flows That Include Shocks

A methodology for measuring skin friction (also known as wall shear) in complex flows typical of those inside supersonic-combustion ramjet (scramjet) engines has been developed. The flows inside scramjet engines are turbulent and include shocks. Because the dynamic pressures of such flows are high, even small skin-friction coefficients can significantly degrade engine performance. Hence, it is desirable to measure skin friction in order to gain better understanding of engine performance and to enable calibration of skin-friction submodels of computational fluid dynamics models used to design scramjet engines. The presence of shocks and the large heat fluxes associated with flows in scramjet engines add to the challenge of measuring skin friction, and the present methodology provides means to meet the challenge. Major elements of the methodology are a generic design for a gauge and techniques for processing the readings of the gauge such that the wall shear at the gauge location can be determined fairly accurately, even when a shock impinges directly on the gauge.

Posted in: Briefs, Physical Sciences
Read More >>

Miniaturized GPS Controlled-Reception-Pattern Antenna Array

Aminiaturized Global Positioning System (GPS) antenna array is being developed for use on aircraft on which the room available for installation of this or any other equipment is severely limited and there is a requirement for an anti-jamming capability. This miniaturized GPS antenna array is, more specifically, a controlled-reception-pattern antenna array (CRPA), which affords a capability for (1) electronic beam forming to maximize the signals received from GPS satellites and/or (2) electronic null forming to minimize signals received from jamming transmitters or to suppress multipath signals. Heretofore, it has been possible to equip some aircraft with fixed-receptionpattern antenna arrays (FRPAs) but not with CRPAs, which have tended to be larger. It is envisioned that the present development effort will eventually yield anti-jamming GPS CRPAs no larger than the GPS FRPAs now used on military aircraft.

Posted in: Briefs, Physical Sciences
Read More >>